Hydroturbine pump



2 Sheets-Sheet Filed April 17, 1928 June 25, 1929. c. JENNINGS HYDROTURBINE PUMP Filed April 17, 1928 2 Sheets-Sheet 2 amnion Patented June 25, 1929.

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IRVING 0. JENNINGS, OF SOUTH NORWALK, CONNECTICUT.

HYDROTURBINE PUMP.

Application filed April 17,

torced into and out of the displacement chain-- bers as the rotor turns. Suitable ports are provided so that the piston action of the liquid thus obtained can be utilized elther to exhaust or compress a fluid.

In the construction shown in said patent, the rotor is ournale'd on a hub or hubs and is provided with holes or ports extending from the bottom of the displacement ohamhere to cooperate with holes or ports formed in said hub or hubs. This arrangement is advantageous in that the displacement chambers can be brought down nearly to the center of the rotor and thus a great proportion of the rotor space utilized; but it is disadvantageous in that it is difficult to maintain a tight fit between the rotor and the hub or hubs.

The object of: the present invention is to retain the advantage of said structure and do away with said disadvantage.

To iu-emnplish this end the hub or hubs on which the rotor turns is or are tapered and means are provided whereby adjustment can be made to keep the rotor tight thereon.

The improved structure is illustrated in the accompanying two sheets of drawings, in which Figure 1 is a central longitudinal section of a pump constructed to embody my improvement;

Fig. 2 is a cross-sectional elevation on the line 2--2 of Fig. 1;

Fig. 3 is a cross-sectional elevation on the line Zl-3 of Fi g. 1 and Fig. 4 is a. partial longitudinal section similar to Fig. 1, illustrating a modified construction.

Referring to the first three figures of the drawings, and in detail. A designates thepump casing and B designates a head or auxiliary casing. C designates the rotor 1928. Serial No. 270,776.

which is keyed on a driving shaft D, which is ournaled in bearings carried by the casings Aand B. The bearings 1010 shown, are ball bearings, and the right hand ball bearing is arranged in a bushing 11 which is adjustably threaded into the bracket extending irom the pump casing A, so that the position of the driving shaft D and the rotor C carried thereby can be adjusted axially.

The casing A is provided with an entrance pipe or passage E and with an outlet pipe or passage F. The pump casing A is divided by a partition G, as shown in Fig. 2. The rotor C is tapered to lit nicely on the hub H. The hub H is provided with inlet ports and passages I-P-H and with outlet passages and ports TI -H The rotor C is provided with vanes 0 whereby a series of displacement chambers is formed and two openings C-C are formed at the bottom of each displacement chamber. The auxiliary casing B is divided by a par tition G arranged similarly to the partition G in the casing A. The inlet or entrance pipe or passage E is connected around to the compartment in the auxiliary casing B by a passage e and the outlet pipe or passage F is connected around to the compartment in the auxiliary head B by a passage 7. The auxiliary head or casing B is provided with a hub H, tapered reversely to the hub H on the casi 11g A.

The rotor C also fits on this second hub H. This second hub H is also provided with inlet ports and passages I-I l-l and outlet passages lil -H.

It will be seen that the rotor thus is fitted to turn on two oppositely tapered hubs.

Suitable shims S are arranged between the casings A and H. \Vhen wear occurs, one or more of these shims can be removed and the casings thus brought closer together. This will d aw the hubs into the rotor and will adjust the bearing surfaces. The rotor can be adjusted nicely relatively to the hubs, by turning the bushing 11.

In some cases. I contemplate using only one tapered. hub for the rotor, and such construction is shown in Fl 4. In this arrangement, when it is desired to adjust the relation between the rotor and the hub, all that is necessary is to adjust the rotor axially in the casing.

The details and arrangements herein shown and described may be greatly varied by a skilled mechanic Without departing from the spirit 0]": the invention.

Having thus fully described my invention, What I desire to claim by United States Letters Patent is:

1. In a hydro-turbine pump, the combination of a casing having a tapered hub, ports formed in said hub, a rotor turning on said hub and having displacement chambers, and holes or ports in the bottom of the chambers cooperating with. the ports in the tapered hub.

2. In a hydro-turbine pump, the combination oi. a casing having a tapered hub, ports formed in said hub, a rotor turning on said hub and havingdisplacement chambers, holes or ports in the bottom of the chambers cooperating With the ports in the tapered hub, and means for adjusting the parts axially to take up Wear.

3. In a hydro-turbine pump, the combination of a casing having a tapered hub,a head or auxiliary casing having a reversely tapered hub, ports formed in said hubs, a rotor turning on said hubs and having displacement chambers, and holes or ports in the bottom of the chambers cooperating with the ports in the hubs.

4. In a hydro-turbine pump, the combina tion of a casing having a tapered hub, a head or auxiliary casing having a reversely tapered hub, ports formed in said hubs, a rotor turning onsaid hubs and having displace ment chambers, and holes or ports in the bottom of the chambers cooperating with the ports in the hubs, the casing and the head being arranged so that they can be set closer together to take up Wear.

5. In a hydro-turbine pump, the combination of a casing); having a tapered hub, ports formed in said hub, a driving shaft'extending through said hub, a rotor secured on said shaft and turning on said tapered hub and having displacement chambers cooperating with the ports in the hub, and means for axially adjusting the driving shaft.

In testimonv whereof I have hereunto a1"- fixed my signature.

IRVING O. JENNINGS. 

